C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 8/584 (2006.01) B01F 17/00 (2006.01)
Patent
CA 2714406
The present invention provides a method of treating a hydrocarbon containing formation comprising (a) providing a hydrocarbon recovery composition to at least a portion of the hydrocarbon containing formation, wherein the composition comprises one or more internal olefin sulfonates having 17 or more carbon atoms, (b) adding water and/or brine from the hydrocarbon formation to the composition, (c) adding a solubilizer which comprises an ethoxylated alcohol wherein the alcohol before ethoxylation had an average molecular weight of at least 220 and (d) allowing the composition to interact with hydrocarbons in the hydrocarbon containing formation. The solubilizer may comprise less than 0.1 wt%, preferably from 0.02 to 0.05 wt%, of the total composition and it may have from 5 to 9 moles of ethylene oxide per mole of alcohol.
L'invention concerne un procédé de traitement d'une formation contenant un hydrocarbure, comprenant les étapes consistant à (a) fournir une composition de récupération d'hydrocarbure à au moins une partie de la formation contenant l'hydrocarbure, la composition comprenant un ou plusieurs sulfonates d'oléfine internes ayant 17 atomes de carbone ou plus, (b) ajouter de l'eau et/ou de la saumure provenant de la formation d'hydrocarbure à la composition, (c) ajouter un solubilisant comprenant un alcool éthoxylé, l'alcool avant éthoxylation ayant un poids moléculaire moyen d'au moins 220 et (d) laisser la composition interagir avec des hydrocarbures dans la formation contenant l'hydrocarbure. Le solubilisant peut comprendre moins de 0,1 % en poids, de préférence de 0,02 à 0,05 % en poids, de la composition totale et il peut y avoir de 5 à 9 moles d'oxyde d'éthylène par mole d'alcool.
Barnes Julian Richard
Raney Kirk Herbert
Semple Thomas Carl
Shpakoff Paul Gregory
Smit Jasper Roelf
Shell Internationale Research Maatschappij B.v.
Smart & Biggar
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